From US News and World Report: 

Report on Reproductive and Health Effects of Bisphenol A: The National Institutes of Health’s National Toxicology Program has examined the impact of the compound Bisphenol A and finds only “limited evidence” that the chemical, commonly called BPA, causes adverse health effects. Most Americans are exposed to BPA routinely in plastic food and drink containers (one study showed 93 percent of those sampled had the chemical in their blood), but the level of exposure is considered “low.” The risk is greater for those with a “high” level of exposure—a group that includes formula-fed infants. Indeed, the report expressed “some concern” that the compound might cause “effects on the brain, behavior, and prostate gland in fetuses, infants, and children.”

So, what does this mean for those of us who love our Nalgene bottles, and who switched recently from plastic baby bottles to glass?  It’s difficult to tell.  The FDA recently said BPA is safe at typical exposure levels from food and drink.  But Canadian officials proposed banning it at least in baby bottles.  For now, I’m choosing a precautionary approach.  We’ve kept our Nalgene bottles, but we’re drinking more often now from glass or metal SIGG bottles.  And the baby’s milk is in Born Free glass bottles.